So, yeah, a 77% drop is....bad. That's never good, no matter what fans might claim to the contrary. It may have nothing to do with the film itself. It may be due to some external factor. But whatever the reason is, a 77% drop is just bad.
That said, Disney/LFL may have been braced for it. That's not to say they were "ok" with it, but rather that it's expected. Two things to keep in mind:
1. They had to know that the film was already behind the 8-ball, so to speak, when the original directors had to be ditched and the film had to be largely reshot. Something like that is a big miscalculation, and a costly one at that. It's a ****up, and one that cost lot of money. I suspect that Kathleen Kennedy will survive regardless, but Lord & Miller are likely poison for a while. At least beyond their known wheelhouse of goofy comedies.
2. Keeping the brand in people's minds has value unto itself. So, even a costly ****up may -- in some cases -- be worthwhile, if it doesn't harm the brand. A box office drop in and of itself doesn't attach to the brand. As I noted, there could be external factors. It's bad, but it's not fatal to the brand as a whole (seriously, any brand that can survive TPM is basically invincible). And if the film ends up being regarded a la On Her Majesty's Secret Service (to wit: a good film hamstrung by audience expectations that didn't match with what the film did), it may be a net...well...break even. Not necessarily a win, but not a loss.
Bottom line: I don't see them necessarily killing (a) the current direction of Star Wars over this, (b) the executive leadership at LFL, or (c) future Solo-spinoff projects. That's not to suggest that Disney/LFL is happy with this result, but rather that the disappointments and impact of the film is already priced-in to the internal response to it.